Welcome to your 2365 624 Inspection & testing
1.
A Zs reading is to be entered on a minor works certificate, what is the correct instrument used to determine this reading?
2.
Which of the following would NOT be acceptable for performing an insulation resistance test?
3.
What is the importance of verifying readings obtained with those listed within BS7671 and associated documents?
4.
The image represents which type of earthing system?
5.
Before using a multifunction test instrument, what is the MOST important thing should you check for?
6.
The purpose of the integral test button of a residual current device is to check
7.
The maximum value of earth electrode resistance for a TT installation protected by a 500mA RCD is given by GN3 as
8.
The maximum value of earth electrode resistance for a TT installation protected by a 30mA RCD by GN3 as
9.
A test of continuity at each socket-outlet or a ring final circuit is carried out to ensure that
10.
The minimum insulation resistance value for a SELV installation according to BS7671 17th Edition is?
11.
The first test performed on an initial verification is continuity of protective conductors, what instruments should be used for this test?
12.
The main earthing conductor during an external loop impedance test should be
13.
The definition of isolation is
14.
The consequence of choosing the 200 scale on an ohmmeter to measure the resistance of protective conductors is
15.
During a periodic inspection, protective conductors must not be disconnected if
16.
An Electrical Installation Certificate must indicate which responsibility for an installation?
17.
Polarity can be tested prior to energising using a
18.
An RCD protected socket outlet to BS 7288 should operate when tested at 1I, within what time frame?
19.
A R1+R2 reading at the extreme end of a 25m long 20A radial socket outlet circuit is taken. Given that the resistance per metre of 2.5mm2 cable is 7.41mΩ /m at 20 degrees Celsius, what would be the approximate reading of R1 + R2?
20.
A circuit within an old hospital needs to be isolated in order for it to be safely maintained. There is no circuit schedule board, what is the most effective way of determining which circuit breaker feeds the circuit?
21.
The procedure for proving dead should be by use of a proprietary test lamp or two pole voltage detecting device as recommended by:
22.
What is the recommended duration for the next test of a domestic building
23.
A low resistance ohmmeter should provide a short circuit current not less than
24.
Which of the following tests should be performed specifically on a three-phase circuit?
25.
Which of the following would an inspector check to verify voltage drop within a circuit
26.
Test probes to GS38 should amongst other considerations
27.
When completing an EIC on a TNS system which box should be ticked in the means of earthing section
28.
The Ze is to be measured as part of the initial verification process, what instrument should be used for this task?
29.
Why should the circuit protective conductor be tested before the insulation resistance test?
30.
The item shown in the photo serves what purpose?
31.
If two bonding conductors or equal length were connected in parallel the resistance would
32.
Two ways in which an electric shock can occur according to BS7671 are
33.
Why is it important to keep records of test equipment, usually via serial numbers?
34.
BS7671 has a separate part designated solely to testing and inspection. The legal status of this document is that it is a
35.
The main risk of not carrying out the full safe isolation procedure when working on live circuits is
By Alan Rogers